Internal-combustion engine.



R. M. WILSON.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JUNE 16. 1916.

Patented Mar. 6, 1917.

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Patented Mar. 6, 1917..

3 SHEETS-SHEET 3 ROI-DANS 1!. WILSON, 0F PBAIBIE G-ROVE, ARKANSAS.

INTERNAL-COMBUSTION ENGINE.

Application filed June 1c, 1916. Serial No. 104 007.

To all whom it may concern:

Be it known that I, RoLLANs M. WILSON, a citizenof the United States,residing at Prairie Grove, in the county of Washington and State ofArkansas, have invented certain new and useful Improvements inInternal-Combustion Engines; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to an internal combustion engine.

An object of the invention resides in the provision of an engine whereinthe cylinders are so arranged that the Wear upon the same will bepractically obviated.

A further object of the invention resides in the provision of a novelvalve mechanism forallowing the gas to enter and exhaust from thecylinders.

A still furtherobject of the invention resides in the provision of anengine which is so constructed that but few hearings will be necessaryand consequently the wearable parts will be reduced in number.

With these and other objects in view such as will appear as mydescription progresses, my invention comprises the combination andarrangement ofparts as set forthin and falling within the scope of theappended claim.

In the drawing:

Figure 1 is a plan view of an engine 0011- structedin accordance with myinvention;

Fig. 2 is a side elevation;

Fig. 3 is a vertical sectional view showing the relative positions ofthe intake and exhaust valves for one cylinder;

Fig. 4 is a section on line 4-4 of Fig. 3;

Fig. 5 is a horizontal sectional view showing 'the arrangement of valvesand gas receiving and exhaust'chambers on line 5-5 of Fig. 3;

Fig. 6 is an end elevation of the engine;

Fig. 7 is a detail of the cam shaft; and

Fig. 8 is a detail showing the relative positions of the pistons in thecylinders.

The embodiment of the invention illustrated in the drawing includes acasting in which four cylinders 1, 2, 3 and 4 are located, the cylinders1 and 4 beingarranged side by side and the cylinders 2 and 3. be-

ing arranged side by side with their heads in abutting relation to thecylinders 1 and 4. These cylinders are of arcuate form, the

Specification of Letters Patent.

-later more clearly appear.

' casting.

Patented Mar. 6. 1917.

center of the circle being the point about which the pistons move as acenter, as will These cylinders are 'surroundedby suitable water jackets5 which may be supplied with water from any suitable source. A piston 6is mounted in each of the cylinders and is provided with a piston rod 7These rods 7 are connected to the cross bars 8 of a rectangular frameA,

which frame includes these cross bars andside bars 9. The lengths of thepiston rods 7 are such that the pistons in the cylinders 1 and 4 will beat the outer ends of the cylinders when the pistons in the cylinders 2and are at the inner ends of these latter cylinders. The frame A alsoincludes downwardly extending converging arms 10 which are-provided withtrunnions 11 at their lower ends, which trunnions are mounted insuitable bearings 12 carried by thebase 13. By connecting the pistonrods 7 to the cross bars 8 and 9 and by mounting the frame A in themanner described, the pistons will move within the cylinders in apredetermined relation, which relation will remain constant.

Extending between one pair of these arms 10 is .a rod 13 which is, atits other end, connected to a crank portion 14; in a shaft 15, a onwhich shaft a fly wheel 16 is mounted,

Thus as the frame A oscillates the wheel 1.6 will be given a rotarymovement.

In order that the gas maybe let into and exhausted from the cylinders insequence, I have extended the casting in which the cylinders are formed,as at 16', and have formed a pair of exhaust chambers 17 therein whichcommunicate with exhaust ports 18 and 19, which ports are connected to amanifold 20. Each of the chambers 17 is provided with a pair of exhaustopenings 21 and 22 which are closed by means of valves 23 and 24, thesaid valves having rods 25 and 26, respectively, slidably mounted inbearings 27 and extending through the portion 16 of the casting. Therods are normally seated by coil sprin s 28. Arranged opposite each ofthe valves 23 and 24. are valves, 29 valves are mounted in removableseats 31 which are provided so that the valves 23 and 24 may be put inplace. These valves 29 and 30 are provided with rods 32 and 33,respectively, hich extend outwardly through the side of the portion 16'of the The valves 29 and 30 are for the purpose of closing inletchambers 34 which and 30, respectively, which are arranged in pairs andcommunicate with each other through ports 35 and with an inlet manifold36. 'Arranged between each pair of inlet and exhaust valves are ports 37which extend to the cylinders so that the gas, as it passes from thechambers 34, will enter the cylinders and alternately exhaust therefromthrough the chambers 17.

In, order that the valves may be properly I actuated I have provided acamshaft 38 p which is mounted in suitable bearings 39 on the castingand is driven by a suitable gear connection 40 between the shaft and thecrank shaft 15. This shaft 38 is provided with a plurality of cams 41. Aplurality of rocker arms 42 are pivoted between ears 43 1 0n the portion16' of the casting, wvhich rocker arms are provided with rollers 44which ride upon the cams 41. The opposite ends of these rocker arms 42bear against the outer ends of the valve rods on one pair of the exhaustvalves 23 and 24 and onone pair of the inlet valves 29 and so that whenthe cam shaft 38 is rotated the valves will be unseated. A plurality oflevers 45 are pivoted between ears 46 on the casting and each bears atone end against one of A the remaining valve rods. A push rod 47 ismounted in a suitable bearing 48 on the casting adjacent to each ofthelevers 45 and bears against the adjacent cam 41 so that the levers willbe actuated upon the actuation of the cam shaft and the valves unseated.Now 'these levers 45 and the misses ticular embodiment as it is obviousthat numerous changes may be made in the details of construction withoutdeparting from the spirit of the invention or exceeding the scope of theappended claim.

What I claim .is: y

In an internal combustion engine, the combination with a plurality ofcylinders, inlet and exhaust ports for said cylinders, valves forclosing said ports, a cam shaft having cams thereon equal in number tothe cylinders, rocker arms having rollers bearing against the cams andhearing at their other ends against certain of the valve rods, leversbearing at one end against the other of the valve rods and push rodsengaging the opposite ends of the levers and riding upon theaforementioned cams.

In testimony whereof, I afiix my slgnature, in the presence of twowitnesses.

ROLLANS M.- WILSON.

Witnesses: l

M. A. Pvam'r. Ron HANNAH.

